Zip code 18104: Allentown, Pennsylvania

Q: What city is zip code 18104?

18104 is assigned to Allentown, Pennsylvania. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 18104 in?

18104 is in Lehigh County, Pennsylvania.

Q: What is the population of 18104?

About 48,683 people live in 18104, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 18104?

The median household income in 18104 is $94,601.

Q: What zip codes are near 18104?

The closest zip codes to 18104 are 18105, 18106, 18069, 18102, 18052.

Residential delivery areaLehigh CountyEastern Time

Population

48,683

Median household income

$95K

U.S. $81K

Median home value

$336K

U.S. $333K

Median rent

$1,637/mo

U.S. $1,413

Median age

40.6

U.S. 38.9

Land area

23 sq mi

2,121 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 18104

18104 is a suburban zip code in Allentown, Pennsylvania (Lehigh County), covering 23 sq mi of land. About 48,683 people live here, or 2,121 per square mile. The median resident is 40.6 years old, compared with 38.9 nationally.

The median household earns $94,601 a year, 17% above the national median of $80,734. 8.3% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $336,400, or 3.6 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 71% of occupied homes are lived in by their owners, and renters pay a median of $1,637 a month.

46% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 21.5 minutes each way, and 20% of workers work from home. The most common jobs among working residents are in healthcare; management; and office and administrative support. 23% of households speak a language other than English at home, most often Spanish.

How 18104 compares

Sorted from highest to lowest national percentile

Healthcare workers12.4%
84th
U.S. 9.7% · PA 11.5%549th of 1,704 in PA
Population48,683
79th
U.S. 334,922,499 · PA 13,018,63927th of 1,707 in PA
Work from home19.7%
77th
U.S. 15.1% · PA 15.6%264th of 1,704 in PA
Residents 65 and older20.5%
76th
U.S. 17.2% · PA 19.5%910th of 1,707 in PA
Bachelor's degree or higher46.1%
74th
U.S. 35.7% · PA 35.2%213th of 1,706 in PA
Median earnings per worker$56,957
71st
U.S. $49,666 · PA $50,599320th of 1,693 in PA
Median household income$94,601
67th
U.S. $80,734 · PA $77,971315th of 1,617 in PA
Unemployment rate5.9%
67th
U.S. 5.2% · PA 5.3%492nd of 1,704 in PA
Per capita income$46,691
66th
U.S. $44,673 · PA $44,355355th of 1,707 in PA
Foreign-born residents14.9%
64th
U.S. 14.1% · PA 7.7%90th of 1,707 in PA
Tech workers3.7%
64th
U.S. 3.8% · PA 3.6%344th of 1,704 in PA
Median gross rent$1,637
63rd
U.S. $1,413 · PA $1,209110th of 1,366 in PA
Median age40.6
62nd
U.S. 38.9 · PA 40.91,188th of 1,707 in PA
Population density2,121/sq mi
58th
U.S. 95/sq mi · PA 291/sq mi266th of 1,707 in PA
Homeownership rate71%
56th
U.S. 65.2% · PA 69.3%1,247th of 1,698 in PA
Diversity index52.3
56th
U.S. 61.4 · PA 44.6115th of 1,707 in PA
Income inequality (Gini)0.439
54th
U.S. 0.483 · PA 0.474490th of 1,697 in PA
Median home value$336,400
50th
U.S. $332,700 · PA $254,500236th of 1,628 in PA
Broadband access91.8%
47th
U.S. 91% · PA 89.7%507th of 1,698 in PA
Veterans5.5%
45th
U.S. 6.2% · PA 6.1%1,143rd of 1,707 in PA
Rent-burdened renters48.6%
42nd
U.S. 51.1% · PA 48.2%566th of 1,596 in PA
Uninsured rate5.5%
38th
U.S. 8.4% · PA 5.6%663rd of 1,705 in PA
Poverty rate8.3%
34th
U.S. 12.5% · PA 11.7%978th of 1,699 in PA
Residents under 1819.3%
26th
U.S. 22% · PA 20.4%906th of 1,707 in PA
Average commute21.5 min
20th
StrengthU.S. 26.4 min · PA 26.3 min1,342nd of 1,596 in PA
Self-employed workers6.8%
17th
U.S. 10% · PA 8.2%1,077th of 1,704 in PA
Housing vacancy3.4%
15th
U.S. 10.1% · PA 9.2%1,356th of 1,699 in PA
Government workers9.5%
15th
U.S. 14.5% · PA 11.5%1,103rd of 1,704 in PA

Measure	18104	Lehigh	PA	U.S.	National percentile	Rank in PA
Healthcare workers	12.4%	11.8%	11.5%	9.7%	84th	549th of 1,704
Population	48,683	378,792	13,018,639	334,922,499	79th	27th of 1,707
Work from home	19.7%	14%	15.6%	15.1%	77th	264th of 1,704
Residents 65 and older	20.5%	17.7%	19.5%	17.2%	76th	910th of 1,707
Bachelor's degree or higher	46.1%	34.2%	35.2%	35.7%	74th	213th of 1,706
Median earnings per worker	$56,957	$47,987	$50,599	$49,666	71st	320th of 1,693
Median household income	$94,601	$80,079	$77,971	$80,734	67th	315th of 1,617
Unemployment rate	5.9%	5.9%	5.3%	5.2%	67th	492nd of 1,704
Per capita income	$46,691	$43,088	$44,355	$44,673	66th	355th of 1,707
Foreign-born residents	14.9%	14.4%	7.7%	14.1%	64th	90th of 1,707
Tech workers	3.7%	2.7%	3.6%	3.8%	64th	344th of 1,704
Median gross rent	$1,637	$1,383	$1,209	$1,413	63rd	110th of 1,366
Median age	40.6	39.6	40.9	38.9	62nd	1,188th of 1,707
Population density	2,121/sq mi	1,097/sq mi	291/sq mi	95/sq mi	58th	266th of 1,707
Homeownership rate	71%	65.6%	69.3%	65.2%	56th	1,247th of 1,698
Diversity index	52.3	56.7	44.6	61.4	56th	115th of 1,707
Income inequality (Gini)	0.439	0.465	0.474	0.483	54th	490th of 1,697
Median home value	$336,400	$300,400	$254,500	$332,700	50th	236th of 1,628
Broadband access	91.8%	90%	89.7%	91%	47th	507th of 1,698
Veterans	5.5%	5.6%	6.1%	6.2%	45th	1,143rd of 1,707
Rent-burdened renters	48.6%	54.9%	48.2%	51.1%	42nd	566th of 1,596
Uninsured rate	5.5%	6.4%	5.6%	8.4%	38th	663rd of 1,705
Poverty rate	8.3%	11.6%	11.7%	12.5%	34th	978th of 1,699
Residents under 18	19.3%	22.3%	20.4%	22%	26th	906th of 1,707
Average commuteStrength	21.5 min	24.9 min	26.3 min	26.4 min	20th	1,342nd of 1,596
Self-employed workers	6.8%	7.6%	8.2%	10%	17th	1,077th of 1,704
Housing vacancy	3.4%	4.5%	9.2%	10.1%	15th	1,356th of 1,699
Government workers	9.5%	8.3%	11.5%	14.5%	15th	1,103rd of 1,704

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

15%

5–17

12%

18–24

12%

25–34

14%

35–44

11%

45–54

12%

55–64

10%

65–74

10%

75+

Median age

40.6

Under 18

19.3%

65 and over

20.5%

Race and ethnicity

White66%
Black7%
Hispanic17%
Asian7%
Native American0.1%
Pacific Islander0.0%
Other0.3%
Multiracial3%

Diversity index

52.3

U.S. 61.4

Foreign-born

14.9%

U.S. 14.1%

Born in state

58.3%

Language spoken at home (households)

English only

77%

Spanish

12%

Other Indo-European

Asian / Pacific

Other

Households

Households: 18,532
Average household size: 2.4
Family households: 62.5%
Married couples: 47.3%
Living alone: 31.7%
Veterans (of adults): 5.5%
Male / female: 48% / 52%

Income and poverty

Household income distribution

<$25k

12%

$25–50k

14%

$50–75k

14%

$75–100k

13%

$100–150k

21%

$150–200k

13%

$200k+

14%

Median household income

18104

$94,601

Lehigh Co.

$80,079

Pennsylvania

$77,971

United States

$80,734

Per capita income

$46,691

U.S. $44,673

Poverty rate

8.3%

U.S. 12.5%

Households earning $150K+

26.8%

U.S. 23%

Income inequality (Gini)

0.439

U.S. 0.483

Housing

Median home value

18104

$336,400

Lehigh Co.

$300,400

Pennsylvania

$254,500

United States

$332,700

Median gross rent

18104

$1,637

Lehigh Co.

$1,383

Pennsylvania

$1,209

United States

$1,413

Types of housing

Single-family

77%

2–4 units

5–19 units

20+ units

Mobile home

0.2%

Boat, RV, van

Housing units: 19,193
Owner-occupied: 71%
Vacant: 3.4%
Median year built: 1972
Median rooms: 6.3
Renters paying 30%+ of income: 48.6%
Renters paying 50%+ of income: 25.4%
Home value to income: 3.6× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

71%

Carpooled

Transit

0.1%

Walked

Bicycle

0.0%

Worked from home

20%

Other

0.6%

Commute time (one way)

<10 min

18%

10–19

37%

20–29

22%

30–44

13%

45–59

60+

Average commute

21.5 min

U.S. 26.4 min

Unemployment

5.9%

U.S. 5.2%

In labor force

62.1%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Healthcare

12%

Management

11%

Office and admin

10%

Sales

10%

Education

Transportation and moving

Business and finance

Production

Construction and repair

Engineering and science

Food service

Cleaning and personal care

Computer and math

Legal and social services

Arts, media and sports

Police and fire

Farming, fishing and forestry

0.1%

Industries

Health care and social assistance

18%

Manufacturing

13%

Education

12%

Retail

10%

Professional and technical services

Transportation, warehousing and utilities

Restaurants and hotels

Construction

Finance, insurance and real estate

Wholesale

Other services

Admin, support and management

Public administration

Information

Arts and recreation

Agriculture and mining

0.4%

Median earnings per worker

$56,957

U.S. $49,666

Self-employed

6.8%

U.S. 10%

Government workers

9.5%

U.S. 14.5%

Nonprofit workers

15.3%

U.S. 8.8%

Median earnings by type of work

Type of work	18104	U.S.
Management, business, science and arts	$79,427	$74,888
Service	$25,000	$26,804
Sales and office	$42,995	$40,476
Construction and maintenance	$42,389	$49,199
Production and transportation	$44,217	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

27%

Some college

13%

Associate's

Bachelor's

25%

Graduate

21%

High school graduate or higher: 94.4%
Bachelor's degree or higher: 46.1%
Graduate or professional degree: 20.6%
Households with broadband: 91.8%
Cable, fiber or DSL: 79.9%
No internet access: 6.3%
Without health insurance: 5.5%
Limited-English households: 4.5%

Geography

City (USPS): Allentown
State: Pennsylvania
County: Lehigh County
Center point: 40.6117° N, 75.5469° W
Land area: 23 sq mi
Water area: 0.2 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Allentown17% of zip
Cetronia (unincorporated)4% of zip
Dorneyville (unincorporated)2% of zip
Wescosville (unincorporated)1% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 18104

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
18105	Allentown, PA · PO box	3 mi	—	—	—
18106	Allentown, PA	3.4 mi	6,226	$92,813	$412,200
18069	Orefield, PA	3.7 mi	8,515	$117,895	$424,500
18102	Allentown, PA	3.7 mi	51,001	$43,085	$163,400
18052	Whitehall, PA	3.9 mi	29,451	$75,665	$262,900
18101	Allentown, PA	4.1 mi	6,120	$44,773	$171,300
18103	Allentown, PA	4.2 mi	48,746	$72,895	$272,700
18046	East Texas, PA	4.5 mi	201	—	—
18087	Trexlertown, PA	4.5 mi	590	$72,917	$346,100
18195	Allentown, PA	4.5 mi	0	—	—
18037	Coplay, PA	4.9 mi	7,472	$83,542	$256,600
18032	Catasauqua, PA	5.2 mi	9,555	$81,098	$222,700

Zip codes like 18104 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 18104

What city is zip code 18104?

18104 is assigned to Allentown, Pennsylvania. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 18104 in?

18104 is in Lehigh County, Pennsylvania.

What is the population of 18104?

About 48,683 people live in 18104, according to the Census Bureau's American Community Survey.

What time zone is 18104 in?

18104 is in Eastern Time.

What is the median household income in 18104?

The median household income in 18104 is $94,601.

What zip codes are near 18104?

The closest zip codes to 18104 are 18105, 18106, 18069, 18102, 18052.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 18104, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.